Mechanism for automatically replenishing weft in power looms



Dec" 18, 1928.

H. ARIMA NECHANISM FOR AUTOMATICALLY REPLENISHING WEFT IN POWER LOOMS Filed April 14. 1925 4 SheetsSheet Dec. 1s, 1928.

v H. ARIMA MECHANISM FOR AUTOMATICALLY REPLENISHING WEFT IN POWER LOOMS 4 Sheets-Sheet 2 Filed April 14. 1925 velz/iar Dec. 1s, 1.928. 1,695,630

H. ARIMA MECHANISM FOR AUTOMATICALLY REPLENISHING WEFT IN POWER LOOMS Filed April 14, 1925 4 Sheets-Sheet 5 Dec. 18, 1928. 1,695,630

H. ARIMA MECHANISM FOR AUTOMATICALLY REPLEEISHING WEFT IN POWER LOOKS Filed April 14. 1925 4 Sheets-Sheet 4 Fig. 4 1s a view-of geamnglof a change? I i Patente il Decf '1 928K HfIIOSUKE -ARIMA- OE .M JAPAN-z I undmmrsm monmmrom'nlcainy w Em m ,mwank LOO-MS;

'Ap nemomniedspm14; 1925,"s:ria1fnd-.-22;:989, ana'imia en 55124; 1924; i

i This inventionirelates to au'tbniatic: weft shuttles ut of'the bexpa'reserve-shi ttl depositbry; and a shuttle-carrier, all so a1-v ranged thatwhenever a weft thread breaks,

* 0 1" a{sh'uttle isusedf' p 01 thrown out of the ,hoxa new shuttle will he autcmatieally in- Srted in thellay. -M'c.tion is tra nsmitted" H {tom the main shaft ,to achange 'shaftt-he j slidiiigihoardof rthelshuttlhox moved u'p-' f-tle'bo'x',

15 the plushrod ejects the shuttle, after which the shuttle carrier. receives, a shuttle from the-depesitdi yandharfies it to the ,shuttie ho'xiyt-he slidingboaiid then coming halfway. dbwnr and supporting theshuttle.

3 Thegshiittl carrier thenmoyes away, the slidingboard"cleses-the'shuttle hex, and the' 1 wppkpf weaving jis; resumed; The obje'ct o f.

Ithis inventicnis to increase efficiency of weavmg. by automatically replenishing the; weft when itvis hmken, .cr the shuttle is used up or thrown out'efthe be); andte continue the werliaofweaving The aec ompanylng 'fignresstiowl my invenmai which "80 i s whom view efparfi-tefthelcom emhody'ingzimy inventien V Eig. 2zis a sectionalfsidecnt Onthe line IIII'o-fiFig, 71"."

Fig.7 3 is a plan 'view" of pal-t shownin shuttle depesitery,

Fig.8 is a Isidewiew Ofia mechanism f 'or hactn-atii1g; the friction clutchi eff the main EigwljO isia glani view of; the mechanism .-E-ig--1;3, is a I mechanism;

Fig; 14 is side t'iew hfl-az reserve shiittlef degaositor- Ma a ma lnioxg -.im(1, mechanism whichactuates" thepnshiojd; u

view of a reserve sh'uttle' Fig- 77 aside vi w of the reseiveshnttle;

dpesitogy showinghew a shuttle-iscticp ped. 1

61 carrying; a; shnttle 'frqin tlie fermeij" t0" the latter;

tle box" showing how a shuttle is ejected.

-Fig. 1'6is a i i'ewsimilanto Fig: 15', shewi- I v n'g; the" shuttle box when a new shnttler is 'fe'dfin';

showing the shuttle box: when a new shuttle has: been fed in and the; carrier retire'dl Fig; 18'i's a'si'de View of canif nec'hanism FigQlQw is a, side viewo'f cani m'echanism which aietua'tes the shaft, (25) is achangefshaftand ()"isa Fi 17 is ifiW @185 similar to -Fig; 15,"

Fig; 15 -133, sectienalsi'deviewof the "shuts reserve shuttle depesitery: Normally; the

change shaft (25); does not rotate, hilt" when it becomes necessary to changet-he slintfle;

it begins; to rotate and: bymeans-of ca ms pievid'ed' 0111 the same ,7 shaft the Iil'otidn" is ti'ansinitt'e-d to theshuttle box the shuttle contained therein being thrcwn out of the hex "an'dflout? ofthe"inthi-0ugh a fiinneli (7 8),' and one of the resenv e' shiittle s in the? depository delivered to the box.- The mechafiism fer fer'fori'ning this change is descpibedhereil'la'feri I willffiist descrihe' transnnssie f of power 1 from the crankshaft- 1') toi the change-shaft TO the crank shaft v as shown in Fig serves, as a flywheel; Loosely mounted-D11 the haft 1) as musc- 3) which is to "engage-'- I thedisc ,an'da b'elt galley (5L) ,1rigid1y connectedfw'ith thedisc Aleosegbelt'pulley clii'tch disc ischnnectefil witha-(crank iever (1,6'). hy alink (17)]. i 1 Another crank lever 15 5 which is. firmly fixed to the same shaft,

is connected at' (:9) with a handle (8); which is fulcr imedat by means f a link (13), Lbell crank. (12) and another link i (10).

Thus 'if thehaildi'e (8 is shiftedlto the left is thenchitched' to thei crank shaft. vthe infFig 8; thew1- c1i tchjdisc firmly engages the clutchdi'sc (2;).';.an c1 as the belt'pulley ('5) the sprocket (4) firmly fixed to the belt pulley nism.

(5). The change shaft (25) is mounted on a frame (37), (39) and (40) which is firmly fixed to the lay (38), and to this shaft is loosely mounted a toothed wheel (26) which is ro-' tated by a toothed wheel (22) on a shaft through intermediate toothed wheels (23) and (24). To the said toothed wheel (26) is fixed a clutch member (27), and another clutch member, (28) which is to engage the clutch member 27, is fixed to the shaft a. forked rod which is guided by shafts (20) and (36), as shown in Figs. 1 and 8, is connected to the handle (8) at its lower part (77) by a link (33), bell crank (32) and an other link (30). Thus, if the handle (8) is moved toward the left in Fig. 2 and the work of weaving-is resumed, the clutch members (27) and (28) disengage, but if the handle is moved to the other direction, then the friction clutch members (2) and (3) of the crank shaft (1) disengage. and at the same time the clutch members (27) and (28) engage. The weaving portion of the loom-then becomes inoperative, but the belt pulley continuing rotation, the change shaft (25) is rotated through the chain (19) and toothed wheel, such movement of the handle (8) toward the right taking place automatically when the weft breaks, or the shuttle is used up or is thrown out of the shuttle box, the

handle (8) being actuated by a weft-sidefork (46) (Fig. 3), and pushed by a forklever (47). Such weft-side-fork and forklever are well known as as stopping mecha- As shown in Fig. 8, a toothed wheel is firmly fixed to the shaft (25),and drives through intermediate toothed wheels a toothed wheel (75) firmly fixed to a shaft (74). To the shaft (74) a cam (76) is firmly fixed, and thus when the shaft (25) has almost finished one rotation, the cam pushes the lower end of the handle (8) toward the right, the work of weaving is resumed,

clutch members (27) and (28) being disent (53) is connected to a rod 51, which is, as

gaged and the friction clutch (2) and (3) beingbrought to contact.

The shuttle box is constructed as shown in Figs. 11 and 12, and consists of a sliding board (50) whichcan slide up or down and Through connected to one arm of a bell crank lever (53) pivoted to a bracket (52) firmlyattached to the shuttle-box, passes through, and the other end of thesame bell crank lever shown in Fig. 18, is provided at its lower part with a slot.. A roller (49) is mounted on the rod (51), and through the slot the change shaft (25) is passed through, so that a cam (42) firmly fixed to the change-shaft (25) is in contact with the roller (49). To the sliding board (50) is connected a rod (48) which 18 provided at its lower part with a slot through which the change shaft (25) passes,

'as shown. in Fig. 19. A roller (49) mounted on this rod (48) is in contact with a cam (41) which isfirmly fixed to the change shaft (25). Thus when the change shaft (25) makes one rotation, the push rod (54) moves forward and backward once, and the sliding board (50 slides up and down once. he board (50 moves upward uniformly, but while descending it stops in an intermediate position remaining for a moment at the half closed position. 7

The reserve shuttle depository as shown in Figs. 5, 6, and 7, is firmly fixed to the frameof the loom at a relative position as shown in Fig. 14 with regard to the shuttle box, and is a bottomless box with pivoted shuttle supporting-rods (63) and one i on the front and the other on the back. The upper bent part of these shuttle-supportingrods entering the depository one slightly below and the other a little above the bottom. These two rods are connected with each other with a link (64), and the link (64) is connected with an arm of a bell crank lever (62). The other arm of the bell crank lever (62) is connected with one end of a flexible power-transmitting rod (91), the other end of which is connected with a lever (56) which i is to be moved, as shown in Fig. 2, by a cam (45). Thus, when the shaft (25) makes one rotation, the shuttle-supporting-rods (63) and (65) make one oscillation; that is, when the shuttle-supporting-rods (63) and (65) move toward the left as shown in Fig. 7, the' lowest shuttle (92) in the depository which has hitherto been supported by the shuttlesupporting-rod (63). willbe dropped down, the next lowest shuttle being supported by the shuttlesupporting-rod (65) and when the shuttle-supporting-rods move in the opposite direction that shuttle will become the lowest one in the depository.

A shuttle-carrying rod (66) is loosely mounted on the shaft (20), and the upper part of this shuttle-carrying rod is bentinto a shuttle-receiver (93). A lever (68) turns on the same shaft (20), and this and the shuttle-carrying rod (66) are connected with a spring (7 0) the pul ing action of the spring (70) being limited by justing screw (71). A cam (44) 1s firmly fixed to the change shaft (25), and this cam 44) and a roller "(67) at the upper part of the lever (68) are always in contact as the center of gravity of the combination of the shuttle-carrying rod (66 and the lever %68) lies toward the back (t e left side, in ig. 14). When the cam (44) rotates and its convex part pushes the roller (67), the shuttle carrying rod (66) moves to the right from the position shown in Fig. 14, and the shuttle-receiver (93) at the upper part enters ever (68) an adshuttle carrying rod (66) being pulled -'toward the lever (68) by the spring (70) but restricted by the adjusting screw (71), the

shuttle-receiver will stop when it has entered r the shuttle-box, although the lever (68) still I receives motion, and whenvthe shuttle-carry ing rod (66) retires, it will stop just below the shuttle-depository by the adjusting ace tion of the adjusting screw (71).

handle (8) toward theleft in Fig. 2, the

, the .shuttle-carrying-rod (66), as shown in weft breaks, or the shuttle is used {up or thrown out of the shuttle-box,the Weaving portion of the 100m stops and the changeshaft (25) begins to rotate. -As shown" in Fig. 15, the cam (41) through the rod (48) pushes the sliding. board (50) upward thus opening the back of the shuttle box; and then the recessed partofthe cam (42) causes'the rod to descend, and the push rod (54 advances forward, ejecting the shuttle which leaves the loom through the funnel (78). During this time, a newshuttle lying at the lowest position of the reserve shuttledepository, drops down on the shuttle receiver of Fig.7, by action of the cam (43). The shuttle-carrying-rod (66) then moves forward (toward the right in Fig. 14) by action'of the cam (44) and carries the shuttle thereon 1 to the shuttle box as shown inFig. 16. At

this time, the sliding board actuated by the medium projections of the cam (41), descends to thehalf closing position, as shown in Fig. 17, and holds the shuttle, the shuttle carrying rod (66) retires, leaving the shuttle in the shuttle box, Then the .sliding'board (50) descends to the lowest position,being actuated by thelowest part of the cam (41),

and maintains the shuttle in the working position. At this time the cam (76) of the shaft (74) pushes the handle 8) back to its former position, the changes aft stops its rotation, and the work of Weaving is resumed. In this invention, any shuttle that becomes unusable, is thrown backward from the shuttle-box, and a new shuttle is supplied from the reserve-shuttle-depository on the back of the shuttle-box, all automatically;

and not only the weft is supplied most accurately, but many new shuttles being kept in the depositorywhich are supplied 1111311111 'as the occasiongrequires, one Workman can have many looms under his charge, andcas it is very simple in construction, 1t can be fitted to any loom. s

ley loosely mounted and slidable with a fricc t-ion disc on the main shaft, a second friction disc fixed to the main shaft, achangeshaft,

a clutch onthe change-shaft, a handle, links and levers connecting the handle with the aforesaid slidable pulley and discon the In this invention, if afterthe' commencement of the workof weaving by moving the c main shaft, a clutch shifter connected tosaid handle for shifting one of the members' of the aforesaid clutch of the change-shaft,

means for transmitting motion from the from the change shaft toreset the handle and restart the weavingoperation, a shuttle box 'providedwvith aslidable board arranged to 7 tion and letinthe aforesaid clutch member Y to effect achange of shuttle,;a cam rotatable open and close the back of the box, a push: 5 rod adapted to. move through the front wall of the box and push backward the shuttle in 1 the box, cams on the change-shaft to actuate said slidable. board and push rod, a reserve shuttle-magazine, a'shuttle transferrer and means on the change-shaft for movlngthe transferrer to carry a-vfreshfshuttle from the magazine into the shuttle box upon the shuttle in the latter being ejected by means of the c push rod. V i 2. 'Mechanism' for roller in contact with tliefboard operating cam on the change-shaft, said cam being so shaped that the board during its downward) or closing movement is momentarily retained in a partly closed position .so as to hold the newly inserted shuttle in the box while the v I automatically replenish ,ing the weft in a power loom, accordingto claim 1, wherein the slidable board of the shuttle box is moved up and down to open, and close the box by means of a rod having a a claim 1, wherein the shuttle transferrer is pivf oted on a shaft on which an actuating lever for said transferrer' is also pivoted, said transferrer and lever being drawn towards one another by a sprlng, and adpistable means being provided for limiting their relative positions'.

In testimony whereof Ihave affixed my signature.

'HIKOSUKE ARIMA. 

